Fig. 5

Elaphomyces labrynthinus (holotype; Henkel 9918). A. Sectioned ascoma showing the embedded black-mantled ectomycorrhizas within the inner peridial layer. B. Ascomata showing peridial surface, gleba, and peridium in section. C. Microscopic view of sectioned peridium. D. Thick-walled, interwoven hyphae from the fourth peridial layer. E. Thick-walled, somewhat swollen, interwoven hyphae from the fifth peridial layer. F. Collared septa on hyphae within the gleba. G. Ascus with eight ascospores in transverse planar view. H. Ascospores with ornamentation in outline and surface views. I. Scanning electron micrograph of ascospores. Bars A = 0.5 mm, B = 1 mm, C = 100 µm, D = 5 µm, E = 15 µm, F = 5 µm, G = 20 µm, H–I = 10 µm.